The URL can be used to link to this page

Home My WebLink About3260.2to 0 N rn w a U J Z 0� U ::D O Of Z W 0 > U 0 V) ® 0!� ry W Z_ N N O J Q W W 0 Z U w � m 3 Uj o 0� z a6 � W w W Y asa w U� co n �� 0- Q o CD w co N -d- N Q Q U) C/) z z w w 0 0 0 0 z z 0 0 z i 0 z z w w w LL_ LL_ 0 0 � v Li LU o' 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON DEPARTMENT OF PUBLIC WORKS, DESIGN ENGINEER. 2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. 3. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR OTHER CONSTRUCTION TO INSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETED AND POTENTIAL FOR ON- SITE EROSION HAS PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITTEE. 4. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITTEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO INSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITTEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY HIS ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 5. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES. 6. DURING THE TIME PERIOD OF NOVEMBER 1 THROUGH MARCH 31, ALL PROJECT DISTURBED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UNWORKED FOR MORE THAN TWELVE (12) HOURS, SHALL BE COVERED BY MULCH, SODDING, OR PLASTIC COVERING. 7. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD OF 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR IN QUESTION. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITTEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING, OR OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD. 8. FOR ALL EROSION/SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH EXCEEDS 6 INCHES, A FENCE, A MINIMUM OF 3 FEET HIGH IS REQUIRED, WITH 3:1 SIDE SLOPES. 9. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24' X 50' X 8" OF 4- TO 6- INCH QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE CONSTRUCTION SITE. PLASTIC COVERING: 1. PLASTIC SHEETING SHALL HAVE A MINIMUM THICKNESS OF 6 MILS AND SHALL MEET THE REQUIREMENTS OF THE STATE STANDARD SPECIFICATIONS SECTION 9-14.5. COVERING SHALL BE INSTALLED AND MAINTAINED TIGHTLY IN PLACE BY USING 2. SANDBAGS OR TIRES ON ROPES WITH A MAXIMUM 10-FOOT GRID SPACING IN ALL DIRECTIONS. ALL SEAMS SHALL BE TAPED OR WEIGHTED DOWN FULL LENGTH AND THERE SHALL BE A LEAST A 12 INCH OVERLAP OF ALL SEAMS. CLEAR PLASTIC COVERING SHALL BE INSTALLED IMMEDIATELY ON AREAS SEEDED 3. BETWEEN NOVEMBER 1 AND MARCH 31 AND REMAIN UNTIL VEGETATION IS FIRMLY ESTABLISHED. WHEN THE COVERING IS USED ON UN -SEEDED SLOPES, IT SHALL BE KEPT IN PLACE 4. UNTIL THE NEXT SEEDING PERIOD. PLASTIC COVERING SHEETS SHALL BE BURIED TWO FEET AT THE TOP OF SLOPES IN 5.01RDER TO PREVENT SURFACE WATER FLOW BENEATH SHEETS. PROPER MAINTENANCE INCLUDES REGULAR CHECKS FOR RIPS AND DISLODGED ENDS. 6. MULCHING: 1. MULCH MATERIALS USED SHALL BE HAY OR STRAY AND SHALL BE APPLIED AT THE RATE OF 75 TO 100 LBS PER 1000 SQ FT ® 2 INCHES THICK. 2. MULCHES SHALL BE APPLIED IN ALL AREAS WITH EXPOSED SLOPES GREATER THAN 2:1. 3. MULCHING SHALL BE USED IMMEDIATELY AFTER SEEDING OR IN AREAS WHICH CANNOT BE SEEDED BECAUSE OF THE SEASON. 4. ALL AREAS NEEDING MULCH SHALL BE COVERED BY NOVEMBER 1. American Engineering Corporation Engineers Planners Surveyors 4032 148th Ave. N.E. Redmond, WA 98052 PHONE (425) 881-7430 Fax (425) 881-7731 N 0 z File path & Name P:\2003\0312\Engineering\Dwq\E0312ESNDl.dwq 9/29/2005 3:012 / PM PDT SECTION 15, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M. PROTECT INLET5 DURIMG SEEDING: CON5TRUCTION. K.EE P 5EC31- MENT OUT OFT14E SWRM DRAINAGE SYSTEM. 115E WAlF- 1. SEED MIXTURE SHALL BE PER TABLE 8.4, AND SHALL BE APPLIED AT THE RATE OF CIRCLE f3EUIMD CURD INLET5 120 LBS PER ACRE. OuRwG STREET COIJSTRUCTIOM. MODiP`( PROTECTION AS CON- 2. SEED BEDS PLANTED BETWEEN MAY 1 AND OCTOBER 31 WILL REQUIRE IRRIGATION 5TI2UGTIom PwGk_=SSES. AND OTHER MAINTENANCE AS NECESSARY TO FOSTER AND PROTECT THE ROOT STRUCTURE. CJRCttl11R SUAPE i51JOT E5SENTIAL- VA12Y SWAPS TOFfT ORANJACAE AREA 3. FOR SEED BEDS PLANTED BETWEEN OCTOBER 31 AND APRIL 30, ARMORING OF THE AND TE2P44M. 015SEWE ID CIJEGICTRAP EFfIUENCY AND MODIFY AS SEED BED WILL BE NECESSARY. (E.G., GEOTEXTILES, JUTE MAT, CLEAR PLASTIC NECE55ARY TO IN5UQI! WISFACTORY COVERING). TIZAPPINC-a OF5IDIMENT, CAM BEE. '15011�WgZb ADAPTED INLET. 4. BEFORE SEEDING, INSTALL NEEDED SURFACE RUNOFF CONTROL MEASURES SUCH AS FflAnrlE GOVE MIIJIMUM DEPTii_I GRADIENT TERRACES, INTERCEPTOR DIKES, SWALES, LEVEL SPREADERS AND SEDIMENT BASINS I19LTEP- FAWfC MAXIMUM DEPTU-2' --- F 5. THE SEEDBED SHALL BE FIRM WITH A FAIRLY FINE SURFACE, FOLLOWING SURFACE ROUGHENING. PERFORM ALL OPERATIONS ACROSS OR AT RIGHT ANGLES TO THE SLOPE. 6. FERTILIZERS ARE TO BE USED ACCORDING TO SUPPLIER'S RECOMMENDATIONS. AMOUNTS USED SHOULD BE MINIMIZED, ESPECIALLY ADJACENT TO WATER BODIES AND WETLANDS. SEED MIXTURE 1. SEED SHALL NOT BE USED IN AREAS SUBJECT TO CONSTRUCTION TRAFFIC. 2. CHANNELS AND BIOFILTERS HAVE SEPARATE CRITERIA FOR VEGETATIVE ARMORING. THIS PRACTICE MY BE APPLIED IN ALL AREAS OF 5% OR LESS SLOPES AND IN 3. STEEPER AREAS (UP TO 10% SLOPES) FOR A MAXIMUM HORIZONTAL DISTANCE OF 100 FEET. USE MULCH OR NETTING OR OTHER TREATMENTS FOR STEEPER AND LONGER SLOPES. NAME PROPORTION BY WEIGHT PERCENT PURITY PERCENT GERMINATION REDTOP AGROSTIS ALBA 10% 92 90 ANNUAL RYE LOLIUM MULTIFLORUM 40% 98 90 CHEWING FESCUE 40% 97 80 (FESTUCA RUBRA COMMUTATA) (JAMESTOWN, BANNER, SHODOW OR KOKET) WHITE DUTCH CLOVER (TRIFOLIUM REOPENS) 10% 1 96 90 TOPSOIL THAT WILL BE TEMPORARILY STOCKPILED: 1. STOCKPILES SHALL BE STABILIZED (WITH PLASTIC COVERING OR OTHER APPROVED DEVICE) DAILY BETWEEN NOVEMBER 1 AND MARCH 31. 2.IN ANY SEASON, SEDIMENT LEACHING FROM STOCK PILES MUST BE PREVENTED. TOPSOIL SHALL NOT BE PLACED WHILE IN A FROZEN OR MUDDY CONDITION, WHEN 3. THE SUBGRADE IS EXCESSIVELY WET, OR WHEN CONDITIONS EXIST THAT MAY OTHERWISE BE DETRIMENTAL TO PROPER GRADING OR PROPOSED SODDING OR SEEDING. PREVIOUSLY ESTABLISHED GRADES ON THE AREAS TO BE TOPSOILED SHALL BE 4. MAINTAINED ACCORDING TO THE APPROVED PLAN. MAX. - 5LAPE 1:1 CLM OUr MEN MEktr 15 W MLOW GRATE, 5E.CTION LEAVE OUT 15LOGK TEMPOPMLY WSEItr TILE Wliti hmzF-- 50ZEE1.1 AND C, 9AW-L T7 T1EIZ... Kfr:P F :C _ DWAiERED. CATCH BASIN/INLET/ SEDIMENTATION TRAP - TYPE C N.T.S 2:1 SLOPES j A B 2"-4" ROCK Apo L oQa ��► -1 I i I I I� � fi 1-111-11- -�I=^- L = THE DISTANCE SUCH THAT POINTS ! I (I A AND B ARE OF EQUAL ELEVATION i =1 ROCK MUST COMPLETELY COVER THE BOTTOM AND SIDES OF THE DITCH FILTER FABRIC MATERIAL 60" WIDE ROLLS. USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO WIRE. 2" BY 2" 14 GA. WIRE FABRIC OR EQUIV. FILTER FABRIC MATERIAL " 6 2"BY2"BY14GA. 2' -0" WIRE FABRIC OF EQUIV. 2�_0" 5' -0" PROVIDE 3/4" - 1.5" WASHED 5' 0" BURY BOTTOM OF GRAVEL BACKFILL IN TRENCH 1 " 2'- 6" FABRIC MATERIAL AND ON BOTH SIDES OF FILTER _-6' MAX IN 8" BY 12" FENCE FABRIC ON THE g" MIN. TRENCH SURFACE. 2" BY 4" WOOD POST ALT: STEEL FENCE POSTS. RECOMMENDED FOR APPROVAL BY: DATE: BY: DATE: ! BY: / AJ A -.� DATE: i BY.' .� '� DATE: /p, 4I-105- NOTES: 1. FOR SHEET RUNOFF OR FOLLOWING DISCHARGE FROM A SEDIMENT TRAP OR POND. 2. MAXIMUM SLOPE STEEPNESS PERPENDICULAR TO FENCE LINE IS 1:1. 3. MAXIMUM SHEET OR OVERLAND FLOW PATH LENGTH TO THE FENCE OF 100 FT. 4. IF 50% OR LESS OF THE SOIL, BY WEIGHT, IS FINE PARTICLES SMALLER THAN THE U.S. STANDARD SIEVE NO. 200, THE EOS SHOULD BE EQUAL TO OR SMALLER THAN THE SIEVE SIZE THAT 85% OF THE SOIL CAN PASS THROUGH. 5. THE TRENCH SHALL BE BACKFILLED WITH 3/4" MINIMUM DIAMETER WASHED GRAVEL. 6. FILTER FABRIC FENCES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL PURPOSE, BUT NOT BEFORE THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED. 7. FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REPAIRS SHALL BE MADE IMMEDIATELY. NSA FILTER FABRIC FENCE DETAIL STANDARD DWG. NO. BR21 N.T.S 32�0 EXISTING GROUND 15' MIP EXISTING GROUND >_ ~ �00Li Ld � R/N/ wmWw > w 0 > Fr:DoQ 12" 00wf)- Lni.J invv vv v�rr� e RAMP OR SITE ACCESS ROAD ♦i� �f N 10 1. USE 4" TO 8" QUARRY SPALLS OR CRUSHED ROCK FOR SURFACING AS SHOWN, MATERIAL WITH 'FINES' IS NOT ACCEPTABLE. 100' MINIMUM LENGTH SHALL BE LENGTHENED AS 2. THE NECESSARY TO INSURE MATERIAL IS NOT TRACKED INTO THE PUBLIC RIGHT-OF-WAY. •�-. ■14 . l,`l I • SEE ROAD & STORM PLANS FOR MAX. SLOPE l' V SUBGRADE 2.0% 71 1' MIN. DEPTH TOE OF CUT ALONG ROAD TEMPORARY INTERCEPTOR SWALE DETAIL N.T.S SURFACE AREA DETERMINED AT TOP OF WEIR EL. 403.0 1' MIN. ,L 3.5'- 5' �y 1.5' MIN. + 1 FLAT BOTTOM EL. 399.0 NOTE: TRAP MAY BE FORMED BY BERM OR BY PARTIAL OR COMPLETE EXCAVATION CROSS-SECTION 4' MIN. EL. 404.0 1' MIN. OVERFLOW c� 1 MIN_ 3/4"-1.5" 2"-4" ROCK RIPRAP WASHED GRAVEL GEOTEXTILE DISCHARGE TO STABILIZED CONVEYANCE, OUTLET OR LEVEL SPREADER • err=ter-r ��-r�rTr�_i i i i v GEOTEXTILE I _ _I I (-� �I' WASHED GRAVEL ZONAL EXPIRES O4-05-200$. TRAP OUTLET TESC NOTES & DETAILS 3 ®F 20 AEC #0312 I' It It 1'